Note that the video makes use of a simulation OPC server (Gray Simulator from Graybox). From your screenshot, it seems you are perhaps trying to setup some points off of a simulation OPC server too. Can you confirm that the OPC server is configured and setup correctly? Are you able to browse the OPC tags in the OPC client tool like in the video? If yes, then as Ricky implies, we need to make sure that the PI Interface for OPC DA is also setup and that the points are configured correctly.

Disclaimer: The use of and link to Gray Simulator from Graybox is in no way an official endorsement of the software by OSIsoft, and use of the software is at the user's own risk.